The Pyle Pro PASW15 passive stage subwoofer is loaded with a Genuine Pyle Subwoofer so you know this subwoofer system has been assembled with the highest quality components. This subwoofer features Heavy Duty MDF construction with reinforced corners, Heavy Duty handles, and a vinyl wrapped enclosure, for years of use and abuse, whether it be at live stage gigs, private parties, or DJ events. The PASC15 subwoofer features one 15'' Pyle Premium Subwoofer in a specially designed ported bass reflex enclosure which provides extended low frequency output. The 15'' subwoofer features a 90 oz. magnet and a 2.5'' Kapton Voice Coil, for excellent signal response and precision reproduction of low end frequencies. If you are looking to put together a professional speaker system at an affordable price, make Pyle Pro a top choice.